Elderberry
It’s an old folk remedy. This fruit is loaded with nutrients called antioxidants, and it may help fight inflammation. In some lab studies, an extract from the berries appears to block flu viruses. But scientists caution that more study is needed. You definitely still need to get a yearly flu vaccination! How To Boost Your Immune System Against Disease

Button Mushrooms
They give you the mineral selenium and the B vitamins riboflavin and niacin. That helps you in several ways. If you’re low on selenium, you may be more likely to get a more severe flu. Riboflavin and niacin play a role in a healthy immune system.How To Boost Your Immune System Against Disease

Oysters
They’ve got zinc in them, which appears to have some virus-fighting powers. That’s probably because zinc helps create and activate white blood cells involved in the immune response. It also assists your immune system with tasks such as healing wounds. How To Boost Your Immune System Against Disease

Watermelon
It’s not only refreshing. When it’s ripe, it’s also got plenty of an antioxidant called glutathione. It strengthens the immune system so it can fight infection. To get the most glutathione in your watermelon, eat the red pulpy flesh near the rind.How To Boost Your Immune System Against Disease

Wheat Germ
It’s the part of a wheat seed that feeds a baby wheat plant, and it’s rich in nutrients. It’s a great way to get zinc, antioxidants, and B vitamins. Wheat germ delivers a good mix of fiber, protein, and some healthy fat. In recipes, you can substitute some of the regular flour with wheat germ.

Low-Fat Yogurt
Probiotics, found in yogurt and other fermented products, may ease the severity of colds. Look for labels that say “live and active cultures.” Also look for added vitamin D. Studies show that people with low vitamin D levels may be more likely to get colds or the flu.

Sweet Potato
Like carrots, sweet potatoes have beta-carotene. In your body that turns into vitamin A, which mops up damaging free radicals.This helps bolster the immune system and may even improve the aging process. How To Boost Your Immune System Against Disease

Garlic
This kitchen staple does more than punch up the flavor of food. Raw garlic can help beat skin infections thanks to its ability to fight bacteria, viruses, and fungi. To get the benefits, you have to use the real stuff, though, not garlic powder. A garlic supplement may even help lower your cholesterol.